Electrical condenser



Oct. 5 1926. 1,602,201

. c. E. PEARSON ELECTRICAL CONDENSER Filed March 1, 1923 uuiiIW a Z? 2Patented Oct. 5, 192.6.

UNITED STATES .PATENT OFFICE.

CARL E. PEARSON, OF CLEVELAND, OHIO, ASSIGNOE TO TEAS-LE COMPANY, OFCLEVELAND, 01-110, A CORPORATION OF @3110.

ELECTRICAL CONDENSER.

Application filed March 1, 1923.

This invention relates to electric condensers and particularly tocondensers suitable for use in primary circuits oi' ignition generators.

The chief objects of the invention are coinprised in the provision of acoudcns hatis simple and rugged structurally, easily as sen'lbled, andciiiective and reliable in use.

Other objects, more or less ancillary to the foregoing, will be apparentfrom the following description in which the preferred form ofconstruction is set forth in connection with the accoi'npenyingrdrawing.

In the drawing, Fig. 1 is a front eleva tion oi? n'ry improved condenseras mounted on the frame structure of a magneto.

Fig. 2 is a section on the line 22. Fig.1. 1.

Figs. 3 and 4 are sections on the brol-uzn line 3-3, F ig. 1, showingrespectively the parts as they appear before and utter the securingscrews are driven home. i

Fig. 5 is a section on the line 5-5, Fin; 1.

' Fig. 6 is a perspective view of the coin denser parts in separated. ordisassembled relation so as to more clearly show the construction. 1

Fig. 7 is a face elevation and Figs. 8 and 9 are edge elevations of theconductor terminal fitting employed.

Referring in detail to the construction. il lustrated, 1 is a portion 01the magneto nietallic frame on which the condenser is mounted orsupported. The condenser proper consists of a pack made up of metal foilconductor sheets 2, 3, and interposed diciectrio sheets 4. The conductorsheets 2 and 3 are preferably made of tinfoil and the dielectric sheetsof mica. The alternate co ductor sheets 2 extend at the upper end oithe'pack and are folded over on the front side thereof, as shown.Similarly, the alternate conductor sheets 3 extend at the lower end ofthe pack and are folded over on the front side thereof.

on the two ends of the pack are n'iounteail sheet metalclips 5. 6 whichare pre'i'erahly formed of hard sheet brass 0.00:? thick. The pack withthe end clips applied is in sulated from the support 1 by a sheet '7 ofsuitable n'iaterial such as in'iprcgnated or vulcanized fibre. Thecondenser is secu ed to the support 1 by upper and lower no sections 8and 9 which are preferably stamped from #18 gauge sheet brass and SerialNo. 622,021.

are partially hardcnec. The casing section 8 is formed at one side witha soclzeted and apertured lug 8 and at its other side with a similar lug8 At its top side said section 8 is formed at one side with flanges 8, 8and at its lei t side with a flange 8 and at its right side with aflange 8 In a similar manner the casin section 9 is formed with socketedand aperture-d lugs 9, 9". bottom flanges 9 0, and side flanges 9% 9 Thecasing section 8 which S81 es to clamp the upper part of the condenserto the support 1 is secured to the said support by means of screws 10,11. Said casing section 8 is electrically insulated from the support 1by washers 12 which are interposed between the soclteted lugs of thecasing section 8 and bosses 1 formed on the support. And said casingsection is electrically insulated from the screws 10 and 11 by washers13 13 the edges of which engage the socket walls of the lugs 8, 8 andhold them out of engagement with the shanks of the screws, said shanksbeing smaller in diameter than the apertures oil the lugs through whichthey pass.

Between the lug S" and the head of the screw 11 is arranged a conductorterminal fitting 14; which is in electrical contact with the casingsection 8 but by cngagen'ient of its flange 14; with the aperture of thelug 8 is held out of contact with the screw 11. This terminal fitting;14. is formed with an upturned flange or lug li in the aperture of whichis soldered the end of the insulated conductor 15. The fitting 1d isalso formed with a flange 14 which is curled around the end of theinsulation 15" of the conductor and serves to hold the latter inposition and protect the soldered joint from undue stresses.

The casing section 9 which overlies the lower end of: the condenser issecured. to the support 1 by screws 16, 17 which pass through theapcrtured lugs 9. 9 and by engagement therewith serve to electricallyconnect the section 0 to the support.

on the clips 5 and 6 so as to prevent thei: displacement from the ends01-. the condenses pack. Between the clips a o outer face 0" thecondenser a filler sheet 20 of any suit material.

In assembling and mounting the er, he pack comprising the trio set: o d1ctor sheets and the dielec' shee piled up and the endil I sheets 2 and 3are folded over 5 and 6 are applied to them. ing pack i then laid "anonthe insulating sheet 7 hr ring first in position. The spacer or 1 n onthe 1 uni the springs 18 an clips 5 and G and the casing placed inposition Then tating washers and the corfitting 1- a 'e placed into 1securing screws applied. L f I'M.

Lions 8 and 9 a rein-led curve or how, as she in when the securingscrews are as shown in Fig. l, an eilect' the casin ctions 8 and 9 or.

re "a pack is lllSLll'GC throughout 1 With the parts thus asser t ed itwill be seen that the set oi support 1 and are electricallv through theclip 5, the casing ii the terminal fitting ii to the cor; which isdesigned to lead to one ton iinal the breaker ot' the magneto. @n theother hand, the other set of conductor heets 3 is el ctrically connectedthrough clip 6, casing section 9 and screws 16, 1'? with the magnetoframe 1 and thence to ground.

It will be seen that I hare provideC i condenser, the main conductorsheets and dielectric sheets of which are maintained intact and freefrom pertorations of 1 sort. t will also he noted that no rel' is placedupon soldered joints for elect l v connecting the conductor sheets butthat they are mechanically secured in electrical contact by strong andsimple parts h ch can be relied upon to remain under ditions in properworking orde It ther obvious that the co: denser can senihled qr theinvention being indicated in the appended claims.

What I claim is:

1. In a condenser, the combinat on of support, a pack of condenser elenen s c prising two sets oi sheetconductors foil and dielectric sheetshetweei the conductors, with alternate conductor sheet Lin ot coiran'ipin and sets entent i l u s l 1 t e c and the sleets of the otiersetof con-- ductor sheets extending at the other end of the pack, andmeans tor mechanica ly clamp-- ing the extending conductor sheets ofeach set together, said means comprising resilientmeans for constar tlyexerting pressure on the pack endwise thereo't and being proided with atleast one conductor te aninal .tting.

In a condenser, the combination of a siu iport, a pack of condenserelements comir'sing two sets of sheet conductors of metal foil a1 1 indielectric sheets between the conouctors with alternate conductor sheetsfor'inng one of sald sets extending at one end of? the pack and bentover on the side the not and the other set of conductor sheets acondenser. the combination of a a pack of condenser elements comtwo setsof sheet conductors of metal 0 "101 me. dielectric sheets between thecon ductors with alternate conductor sheets founii' 0t said setsextending at one end oi the pack aid bent 0 "er on the side hereot andthe other set of conductor sheets Ssimilarl extending and bent over atthe other end of the pack, clips of flexible sheet metal embracing theends of the pack respectively and engaging the bent over ends of theconductor sheets, metal casing sections each of which overlies one endof the pack, resilient means between each of said clips and the end wallof the adjacent casing section, and means for securing the casing sections to the support and pressing the clips and conductor sheets intoeffective electrical contact, at least one of the casing sections havinga conductor terminal fitting.

6. In a condenser, the combination of a support, a pack of condenserelements comprising two sets of sheet conductors of metal foil anddielectric sheets between the conductors with alternate conductor sheetsforming one of said sets extending at one end of the pack and bent overon the side thereof and the other set of conductor sheets similarlyextending and bent over at the other end of the pack, metal casingsections one of which overlies each end of the pack and one set of bentover conductor sheets to clamp the pack to the support, one of saidcasing sections being formed with sockets and apertures in the bottomsof said sockets, screws of smaller diameter than said aperturesextending therethrough into the support, and insulating Washers betweenthe casing section, and the screw heads and engaging said sockets tohold the casing section out of contact with the screws.

7. In a condenser, the combination of a support, a pack of condenserelements comprising two sets of sheet conductors of metal foil anddielectric sheets between the con ductors with alternate conductorsheets forming one of said sets extending at one end of the pack andbent over on the sides thereof and the other set of conductor sheetsextending at the other end of the pack, a metal casing section overlyingthe pack and bent over sheets to clamp the pack to the support, saidcasing section being formed L with sockets and apertures in the bottomsof said sockets, screws of smaller diameter than said aperturesextending therethrough into the support, insulating washers between thecasing section. and screw heads and engaging said sockets to hold thecasing section out of contact with the screws, and an aperturedconductor terminal fitting disposed in one of said sockets between thecasing section and an insulating washer and held by engagement with thecasing section out of contact with the screw passing through itsaperture. In testimony whereof, I hereunto aifix my signature.

CARL E. PEARSON.

